Title :
A four-channel CMOS codec filter circuit “SICOFI-4”
Author :
Tiefenbacher, M. ; Caldera, P. ; Dielacher, F. ; Hauptmann, J. ; Steiner, M.
Author_Institution :
Entwicklungszentrum fur Mikroelektronik, Siemens AG, Villach, Austria
fDate :
8/1/1994 12:00:00 AM
Abstract :
Cost reduction by integration of complex mixed analog-digital systems on a single chip and an excellent yield to area ratio is a major goal for IC design in the nineties. In this paper, a four-channel codec-filter chip for analog subscriber lines in ISDN-orientated networks is presented, giving an exceptional example for high level system implementation combined with parallel DSP integration and analog circuitry with high performance. The chip combines four analog frontends, digital signal processing realized by different approaches for a sophisticated filter concept in addition with test strategies including digital and analog BIST. The circuit is fabricated in a standard 1-μm CMOS technology, needs a single 5-V power supply, and can easily be programmed to world-wide different country specifications and applications
Keywords :
CMOS integrated circuits; ISDN; built-in self test; codecs; digital filters; integrated circuit testing; mixed analogue-digital integrated circuits; subscriber loops; 1 micron; 5 V; BIST; ISDN-orientated networks; SICOFI-4; analog circuitry; analog frontends; analog subscriber lines; digital signal processing; four-channel CMOS codec filter chip; mixed analog-digital systems; parallel DSP integration; single 5 V power supply; test strategies; Analog integrated circuits; Analog-digital conversion; Analog-digital integrated circuits; Built-in self-test; CMOS technology; Circuit testing; Codecs; Costs; Digital filters; Digital signal processing chips;
Journal_Title :
Solid-State Circuits, IEEE Journal of
